Band-saw.



J. A. SMITH.

BAND SAW.

APPLICATION FILED FEB.5,1914.

LIQSAlQ Patented Jan.5,1915.

3 SHEETSSHEET 1.

THE NORRIS PETERS CO, PHOTO-LITHQ. WASHINGTON. D, u

J. A. SMITH.

BAND SAW.

APPLICATION FILED FEB.5,1914. Ll2i8,%]l Q, Patented Jan.5, 1915.

. 3 SHEETSSHEET 2.

1 4 M d 7 M fiw w WW W W1. J 2 4 W 1% m W 9 a 7 1 MM ww 2 @21 m w w) M WM Witnesses Attorneys THE NORRIS PETERS CD., PHDTO-LITHCL, WASHINGION. D. c.

J. A. SMITH.

BAND SAW.

APPLICATION FILED FEB. 5, 1914-.

Patented Jan. 5, 1915.

3 SHEETS-SHEET 3.

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Attorneys THE NORRIS PETERS (20., PHOTO-LITHQ. WASHINGTON. D. c.

prune sria JOHN A. SMITH, 10F WALLOWA, OREGON, ASSIGNOR 0F ONE-HALF TO LEONARD COUCH, 0F WALLOWA, OREGON.

BAND-SAW.

weenie.

Specification of Letters Patent.

Patented J an. 5, 1915.

Application filed February 5, 1914. Serial No. 816,779.

To all whom it may concern:

Be it known that 1, JOHN A. SMITH, a citizen of the United States, residing at lVallowa, in the county ofv VVallowa and State of Oregon, have invented a new and useful Band-Saw, of which the following is a specification.

The device forming the subject matter of this application is a wood working machine, adapted, primarily, although not necessarily, to be employed in the making of fellies for wagon wheels, chair rockers and other curved elements.

The machine contemplates the use of a pair of band saws, and one object of the present invention is to provide novel means whereby one of the band saws may be shifted toward and away from the other band saw when the work is out upon different radii.

Another object of the invention is to provide, in combination with a pair of band saws, one of which is adjustable, a guideholding panel which may be removed and be replaced by another panel, the panel and its guide determining the radius of the work which is sawed out.

Another object of the invention is to provide novel means for mounting and controlling the mechanism whereby the work is cut.

It is within the scope of the invention to provide novel means whereby when one of the band saws is shifted with respect to the other, the driving mechanism which controls the shiftable band saw will remain operatively coupled up with the drive shaft.

It is within the province of the invention to improve generally and to enhance the utility of, devices of that type to which the present invention apportains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the de tails of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings :--Figure 1 shows the invention in top plan; Fig. 2 is a horizontal section; Fig. 3 is a side eleing legs 1, united by a lower frame 2 and an upper frame 3.

Supported upon the upper frame 8 is a table 4. The table 4 is somewhat shorter than the upper frame 3, so that at one end of the structure there exists an opening 5, shown in Fig. 1, through which opening certain portions of the driving mechanism pass as will be understood readily when Fig. l is compared with Fig. 3.

Extended longitudinally of the machine and connected at its ends with the lower frame 2 is a supporting bar 6 carrying bearings 7. In these hearings 7 and in an upright 8 which extends between the upper frame 3 and the lower frame 2 at one end of the machine is journaled for rotation a drive shaft 9 provided at one end with a pulley 10 or its mechanical equivalent. It is from the drive shaft 9 that all of the movable elements of the structure are actuated during the sawing operation.

Fixed to the drive shaft 9 is a beveled pinion 11. Adjacent one end, the drive shaft 9 is squared as indicated at 12 and upon the squared portion of the drive shaft is mounted to slide a beveled pinion 14:, the pinion l l being adapted to rotate with the shaft.

Extended longitudinally of the machine and connected at its ends with the lower frame 2 is a trough-shaped guide or support 15, the upper edges of which are bent laterally and outwardly to form flanges 16.

The invention includes an upright support or post 17 provided at its lower end with feet 18 which extend around the flanges 16 of the guides 15 and are secured thereto, the post 17 being immovable. The post 17 passes upwardly through an opening in the table 4 and is held in place by a transverse brace 19 secured to the under face of the table.

Attached to the post 17 adjacent to its lower end is a bracket 20 in which is journaled for rotation a shaft 21, extended transversely of the machine.

Secured to the inner end of the shaft 21 is a beveled pinion 22 which meshes into the beveled pinion 11.

The outer or forward end of the shaft 21 carries a wheel 23 around which is trained an upwardly extended band saw 24.

Mounted in the post 17 (which preferably is of trough-shape) is a bracket 25, shown most clearly in Fig. 4. Secured to the post 17 adjacent to its upper end is a bracket 26. Journaled in the brackets 25 and 26 is a screw 27 provided at its upper end with a turning head 28. Adjacent to its upper end, the post 17 is provided with outstanding guide flanges 29 receiving slidably guides 30 formed upon a vertically adjustable bearing 31 provided with an inwardly extending foot 32 to which is secured a nut 33 in which the screw 27 is threaded, the construction being such that when the screw is rotated, the bearing 31 will be raised and lowered. Journaled for rotation in the bearing 31 is a shaft 34 carrying a wheel 35 around which the band saw 24 is trained.

I It will now be understood that the screw 27 and the vertically adjustable bearings 31 constitute means for tightening and loosening the band saw 24.

The invention further includes an upright post or support 36, mounted to move toward and from the post 17. This post 36 and the mechanism carried thereby are substantial duplicates of the post 17 and attendant parts, and the description of the post 36 may be shortened accordingly. At its lower end, the post 36 is provided with feet 37 which-fit slidably upon the laterally projecting flanges 16 of the guide bar 15. In the table 4 there is formed an enlarged opening 38, permitting the post 36 to be moved toward and away from the post 17. Supported for rotation by the post 36 adjacent to the lower end thereofis a lower shaft 39 corresponding to the shaft 21 hereinbefore described in detail. Secured to the lower shaft 39 is a wheel 40 around which is trained a band saw 41. The upper end of the post 36 is equipped with a vertically adjustable bearing 42 of the type hereinbefore described, the bearing being adjustable by means of a screw, the turning head of which is indicated by the reference character 43. Mounted to rotate in the vertically adjustable bearing 42 is a shaft 44 carrying a wheel 45'around which the band saw 41 is trained. Secured to the inner end of the lower shaft 39 is a beveled pinion 46 which meshes into the beveled pinion 14. In order tomaintain and hold the pinions 14 and 46 in mesh when the pinion 14 moves longitudinally of the squared portion 12' of the shaftt), an angular arm- 47 is secured to the post 36, the arm terminating at its rear or inner end in an eye 48 receiving for rotation the grooved hub 49 of the beveled pinion 14.

he means for securing a movement of the post 36 toward and away from the post 17 preferably includes a screw 50 held for rotation in the lower end of the fixed post 17 and in the end portion of the lower frame 2, the intermediate portion of the screw 50 being threaded into the lower end. of the adjustable post 36, the screw being provided at its outer end with a turning head 51.

In order to hold the posts 17 and 36 in adjusted positions with respect to each other, the posts are provided with overlapped arms 59 adjustably connected by means of a clamp screw or the like.

Depending from the arms 59 are brackets 61, the same including forwardly extended portions which are slotted as indicated at 62 to receive the saws 24 and 41. Each bracket includes a depending hanger 63 in which is journaled a grooved wheel 6-1- against which wheel the smooth, rear edge of one saw abuts. The wheels 64 and the slotted brackets, obviously, serve as guides or abntments for the saws when the same are in operation.

The table 4 is provided between the posts and 36 with an opening 52.

Extended across the opening and secured to the bottom of the table 4 are supporting bars 53, shown most clearly in Fig. 5.

Mounted in the opening 52 and upheld by the bars 53 is a removable panel 54, provided in its forward edges with notches 55 (see Fig. 6) which notches receive the saws 24 and 41.

Intermediate the notches is formed a notch 56 in which is journaled a roller 57 which serves to facilitate the advancement of the work with respect to the saws 24 and 41.

Mounted upon the upper face of the removable panel 54 are guides 58. These guides 58 preferably are curved laterally, the degree of curvature in the guide 58 depending upon the radius of the work which is to be sawed out. In practice, a. considerable number of panels 54 are provided, the guide on the respective panels being of different degrees of curvature, and the construction being such that one panel may be lifted out readily and replaced by another panel, to facilitate the sawing out of a wide variety of forms.

A means is provided for feeding the work onto the saws 24 and 41, and with this end in view, a pair of radius arms are pivoted as indicated at 66 to the table 4, the radius arms constituting what may be denominated a frame Screws 67 are threaded into the radius arms 65, the lower ends of the screws bearing against the table 4. The function of the screw 67 is to limit and adjust the downward movement of the free ends of the radius arms 65 with respect to the table 4. Standards 68 are secured to the table 4 and pass upwardly through the radius arms 65. Compression springs 69 surround the standards 68 and abut against nuts 70 which are threaded upon the upper ends of the standards. The construction is such that although the downward movement of the radius arms 65 is limited by the screw 67, the radius arms are held by the springs 69, yieldably for upward move ment, to the end that a star wheel 72, mounted on a shaft 71 which is journaled in the radius arm 65, may be maintained in engagement with the work, to advance the same against the saws 24 and 41.

Secured to one end of the shaft 71 is a pulley 73 around which is trained a crossed belt 74 engaged around a pulley 76 mounted on a shaft 77 journaled in bearings 7 8 on the table 4 and on one end of the upper frame 3 as disclosed most clearly in Fig. 1. The shaft 77 carries a pulley 79 around which is trained a crossed belt 80 engaged about a pulley 81 secured to the drive shaft 9.

In practical operation, rotation is imparted to the drive shaft 9 by means of the pulley 10, the beveled pinion 11 being actuated and the same driving the pinion 22, rotation thus being imparted to the shaft 21 and to the wheel 23, the band saw 24 being operated, and the same, in its upper portion, 6

traveling with the upper wheel 35.

From the drive shaft 9 rotation will be imparted to the beveled pinion 14 and from the beveled pinion 14 to the beveled pinion 46, the latter rotating the lower shaft 39 and the same through the medium of the wheel 40, actuating the band saw 41, the upper end of which is supported by the wheel 45.

It will be understood that by adjusting the screws of which the screw 27 may be taken as typical, the upper band wheels 23 and 45 may be raised and lowered, thereby effecting a tightening or a loosening of the saws 24 and 41.

From the drive shaft 9 rotation is imparted by means of the belt 80, the shaft 77 and the belt 74 to the shaft 71, the same rotating the star wheel 72 and advancing the work toward the saws 24 and 41. As hereinbefore set forth, the screws 67 which are threaded into the radius arms limit the downward movement of the shaft 71, the shaft 71 being adapted to yield, upwardly, due to the interposition of the springs 69 between the radius arms 65 and the adjusting nuts on the upper ends of the standards 68.

When the work is advanced beneath the star wheel 72 on the power driven shaft 71, the work is carried against the saws 24 and 41. The end portion of the piece of timber being operated upon is received between the guides 58 on the removable panel 54, and thus a curved element is sawed out, the radius of curvature of which is determined by the radius of curvature of the guides 58. The saws 24 and 41 are lined up with the guides 58 and the unsawed portions of the board or stick pass along the outer sides of' the guides, the curved element which has been sawed out traveling rearwardly be tween the guides.

In order to change the radius of the pro duct which is to be sawed out, the panel 54 is removed and replaced by another panel, upon which the guides 58 are placed with a different curvature, one guide, however, always lining up with the saw 24. By rotating the lead screw 50 through the medium of the turning head 51, the post 36 may be moved toward and away from the post 17 until the saw 41 which is carried by the post 36 is lined up with the other guide 58 on the panel 54. lNhen the post 36 is moved to and fro by means of the lead screw 50, the arm 47 which is secured to the post moves the pinion 14 along the squared portion 12 of the shaft 9 and maintains the pinion 14 in mesh with the pinion 46. Prior to the adjusting of the post 36. in the manner hereinbefore described, the set screw 60 which connects the arms 59 of the posts 17 and 36 is loosened, and after the post 36 has been moved to its adjusted position, the set screw is tightened up.

Having thus described the invention, what is claimed is 1. In a machine of the class described, a supporting structure; a pair of posts thereon, one post being fixed and the other post being movably upheld at its lower end upon the supporting structure for adjustment toward and away from the fixed post; means for moving the movable post toward and away from the fixed post; an arm projecting from each post, the arms of the respective posts being overlapped; clamping means engaging the overlapped arms of the respective posts; band wheels journaled on the posts; band saws trained around the bandwheels of the respective posts; and means for driving one band wheel on each post.

2. In a machine of the class described, a

frame; a support carried by the frame adthereby to position the saws and the saw guides properly with respect to the Work guides.

In testimony that I claim the foregoing as my own, I have hereto ailixed my signa- 1s ture in the presence of two Witnesses.

JOHN A. SMITH. lVitnesses H. E. MCLEAN, L. COUCH;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents- Washington, D. O. 

